A die-casting equipment for machining mechanical metal parts

Abstract

This invention discloses a die-casting device for processing mechanical metal parts, relating to the field of metal part processing technology. It includes a base, with a hydraulic rod fixedly connected to the side of the base. A moving mold is fixedly connected to the output end of the hydraulic rod, and a fixed mold adapted to the moving mold is fixedly connected above the device. A port for injecting molten metal is provided above the fixed mold. A water tank is fixedly connected to the outside of the fixed mold, and a working cavity is formed inside the fixed mold. In this die-casting device for processing mechanical metal parts, as the lifting plate moves outward, a first push plate moves outward along the inside of a first connecting box via a linkage rod, drawing gas from the first connecting box to create a negative pressure. This negative pressure, through a connecting hose, draws gas from a second connecting box into the first connecting box. Under this negative pressure, the second push plate moves a mold-moving rod inward out of the fixed mold, reducing the contact area between the inner wall of the fixed mold and the workpiece. The mold-moving rod disengages from the lifting rod, improving the workpiece demolding efficiency.

Description

Technical Field

[0001] This invention relates to the field of metal parts processing technology, specifically to a die-casting equipment for processing mechanical metal parts. Background Technology

[0002] Die casting is a highly efficient and precise forming technology used in the machining of mechanical metal parts. It is widely used in the automotive, electronics, home appliance, and aerospace industries. Die casting involves injecting molten metal (such as aluminum alloy, zinc alloy, magnesium alloy, copper alloy, etc.) into a metal mold cavity under high pressure, where it solidifies rapidly.

[0003] Existing technology 1 (Chinese patent CN213645829U, published on 2021-07-09) discloses a high-precision die-casting mold for producing mechanical metal parts, comprising a base and a positioning post. An anti-slip pad is fixedly connected to the lower part of the base, and a lower mold is welded to the upper part of the base. The positioning post is located inside the lower mold, and a forming groove is fixedly connected to the upper part of the positioning post. A slot is welded inside the forming groove, and a locking block is movably connected to the front end of the slot. A support block is fixedly connected to the left side of the locking block, and a scale is fixedly connected to the rear end of the support block. A groove is fixedly connected to the right side of the forming groove, and a positioning block is fixedly connected inside the groove. A guide groove is fixedly connected to the upper part of the lower mold, and a guide post is movably connected inside the guide groove. This allows for precise adjustment of the forming groove range. Furthermore, the device has a simple structure and high precision, enabling users to... It can process parts of different sizes as needed. There is also existing technology two (Chinese patent CN216705900U, published on 2022-06-10): a die-casting equipment for processing metal garment parts. The key technical points of this equipment are: it includes a feeding device for removing die-cast metal garment parts from the moving mold; the feeding device includes a clamping mechanism for holding the die-cast metal garment parts and a driving mechanism for driving the clamping mechanism to reciprocate towards or away from the moving mold; the driving mechanism includes a mounting base, a support base, and a second driving member for driving the mounting base to reciprocate on the support base towards or away from the moving mold; the clamping mechanism is mounted on the mounting base, which has the effect of eliminating the safety hazards that exist when workers remove die-cast metal garment parts from the moving mold.

[0004] While existing technologies can effectively adjust the range of the forming groove and eliminate safety hazards, the demolding process for the finished workpiece is quite cumbersome. In most cases, only a single demolding method can be used, which may result in incomplete demolding and damage to the workpiece.

[0005] Therefore, we propose a die-casting equipment for machining mechanical metal parts in order to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a die-casting equipment for processing mechanical metal parts, in order to solve the problem mentioned in the background art that the demolding process of the processed workpiece is relatively cumbersome, and most of them can only use a single method for demolding, which may lead to incomplete demolding and damage to the workpiece.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a die-casting equipment for processing mechanical metal parts, comprising a base, a hydraulic rod fixedly connected to the side of the base, and a moving mold fixedly connected to the output end of the hydraulic rod; a fixed mold adapted to the moving mold is also fixedly connected above the equipment; a port for injecting molten metal is provided above the fixed mold; a water tank is fixedly connected to the outside of the fixed mold; a working cavity is opened inside the fixed mold; a serpentine cooling pipe connected to the water tank is fixedly connected inside the working cavity; a docking groove is opened on the docking side of the fixed mold; a lifting mechanism is provided between the docking groove and the working cavity; the lifting mechanism lifts the processed parts by moving the moving mold out and supplying water in the serpentine cooling pipe; a mold-moving rod is slidably connected to the inside of the fixed mold; a demolding mechanism is provided between the inside of the mold-moving rod and the working cavity; the demolding mechanism drives the mold-moving rod to disengage from the fixed mold synchronously with the outward movement of the lifting mechanism.

[0008] Preferably, the moving mold has a docking rod fixedly connected to the docking side, which is adapted to the position of the docking groove, and a sliding groove is provided on the lower side of the docking groove, and the sliding groove is connected to the working cavity. The docking groove is provided in two sets symmetrically distributed about the center point of the moving mold.

[0009] Preferably, the lifting mechanism includes a fixed plate, which is fixedly connected inside the docking groove, and a sliding rod is slidably connected through the center of the fixed plate. An outer connecting plate is fixedly connected to the outer end of the sliding rod, and an inner connecting plate is fixedly connected to the inner end of the sliding rod.

[0010] Preferably, one outlet of the serpentine cooling pipe is connected to the inner side of the docking groove, and the inner connecting plate drives the slide rod to slide outward along the fixed plate under the squeezing action of the water output from the serpentine cooling pipe. When the moving mold and the fixed mold are docked and assembled, the inner end of the docking rod is in contact with the outer side of the outer connecting plate.

[0011] Preferably, an adjustment frame is fixedly connected to the lower surface of the inner connecting plate, and the adjustment frame is slidably connected inside the slide groove. The end side of the adjustment frame extends into the interior of the working cavity. At the same time, a lifting plate is fixedly connected to the end side of the adjustment frame, and two sets of lifting plates are arranged vertically along the end side of the adjustment frame.

[0012] Preferably, lifting rods are arranged at equal intervals on the inner side of the lifting plate, and the lifting rods are slidably mounted on the fixed mold. When the moving mold and the fixed mold are in the mold-closed state, the end of the lifting rod is flush with the inner wall of the fixed mold. When the moving mold and the fixed mold are not closed, the lifting rod and the fixed mold form a sliding structure, and the end of the lifting rod extends out of the inner wall of the fixed mold.

[0013] Preferably, the demolding mechanism includes a second connecting box, which is fixedly connected to the inside of the fixed mold, and a second push plate is slidably connected inside the second connecting box. The mold moving rods are fixedly connected at equal intervals to the inside of the second push plate.

[0014] Preferably, a first connecting box is fixedly connected to the inner side of the fixed mold, and a first push plate is slidably connected inside the first connecting box. A linkage rod is fixedly connected to the inner side of the first push plate, and the linkage rod is slidably connected through the side of the first connecting box. At the same time, the outer end of the linkage rod is fixedly connected to the side of the lifting plate.

[0015] Preferably, a connecting hose is provided between the bottom of the first connecting box and the side of the second connecting box. When the lifting plate moves outward, the mold moving rod slides into the interior of the second connecting box. When the lifting rod is not in the lifting state, the end of the mold moving rod is flush with the inner wall of the fixed mold.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The moving mold moves by the action of the hydraulic rod, and then assembles with the fixed mold. When the two are assembled, the docking rod docks with the inside of the docking groove. Through the cooperation of the docking groove and the docking rod, the stability of the docking between the moving mold and the fixed mold can be ensured, and the misalignment of the fixed mold and the moving mold during mold closing can be avoided, which would affect the subsequent workpiece forming quality.

[0018] (2) After the workpiece is processed, the pump inside the water tank can be started. At this time, the water in the water tank can circulate through the serpentine cooling pipe. The serpentine cooling pipe increases the contact with the workpiece. The water absorbs the heat of the workpiece and conducts heat dissipation, which accelerates the cooling of the workpiece and facilitates subsequent demolding.

[0019] (3) When the moving mold and the fixed mold are closed, the mating rod abuts against the outer connecting plate limit. The cooling water supplied by the serpentine cooling pipe cannot push the outer connecting plate. When demolding, the moving mold drives the mating rod to move outward. The serpentine cooling pipe still supplies cooling water, and part of it flows into the mating groove to push the inner connecting plate, causing it to drive the sliding rod to slide outward along the fixed plate. At the same time, it drives the outer connecting plate to move outward. At this time, the adjusting frame moves outward, causing the lifting plate to drive the lifting rod to move outward. The lifting rod extends out of the inner wall of the fixed mold to lift the workpiece, assisting demolding and improving efficiency.

[0020] (4) While the lifting plate moves outward, the first push plate moves outward along the first connecting box via the linkage rod, drawing in the gas in the first connecting box to form a negative pressure. The negative pressure causes the gas in the second connecting box to be drawn into the first connecting box through the connecting hose. Under the negative pressure, the second push plate drives the mold moving rod to move inward out of the fixed mold, reducing the contact area between the inner wall of the fixed mold and the workpiece. The mold moving rod disengages from the lifting rod and improves the demolding efficiency of the workpiece.

[0021] (5) When the moving mold and the fixed mold are in the mold closing state, the ends of the lifting rod and the mold moving rod are flush with the inner wall of the fixed mold, which can provide a flat, stable and interference-free cavity environment for the workpiece forming. The molten material can fill the mold cavity evenly and smoothly, effectively avoiding problems such as material flow obstruction and uneven filling caused by the protrusion or depression of the rod ends, thus ensuring that the workpiece can be formed stably and there will be no quality defects such as forming jamming. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the mold-closed state of the present invention;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention in its unclosed state;

[0024] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the fixed mold of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This is a three-dimensional cross-sectional view of the working cavity of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the serpentine cooling pipe of the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the lifting rod when the mold is not closed according to the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the lifting plate of the present invention;

[0030] Figure 9 This is a three-dimensional structural diagram of the first connecting box for mold closing according to the present invention;

[0031] Figure 10 This is a three-dimensional structural diagram of the first connecting box before mold closing according to the present invention;

[0032] Figure 11 This is a three-dimensional cross-sectional view of the first connecting box for mold closing according to the present invention;

[0033] Figure 12This is a three-dimensional cross-sectional view of the unmolded second connecting box of the present invention.

[0034] In the diagram: 1. Base; 2. Hydraulic rod; 3. Moving mold; 4. Fixed mold; 5. Water tank; 6. Connecting rod; 7. Connecting groove; 8. Serpentine cooling pipe; 9. Adjusting frame; 10. Slide groove; 11. Fixing plate; 12. Inner connecting plate; 13. Outer connecting plate; 14. Slide rod; 15. Connecting hose; 16. First connecting box; 17. Second connecting box; 18. Lifting rod; 19. Lifting plate; 20. Linkage rod; 21. First push plate; 22. Second push plate; 23. Mold moving rod; 24. Working cavity. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1: To prevent misalignment during the docking of the two sets of molds, which would affect the subsequent workpiece forming quality, a docking groove 7 and a docking rod 6 are provided, such as... Figure 1 - Figure 6 The present invention provides the following technical solution: a die-casting equipment for processing mechanical metal parts, comprising: a hydraulic rod 2 fixedly connected to the side of the base 1, and a moving mold 3 fixedly connected to the output end of the hydraulic rod 2; a fixed mold 4 adapted to the moving mold 3 fixedly connected above the equipment; a through-hole for injecting molten metal provided above the fixed mold 4; a docking rod 6 adapted to the position of the docking groove 7 fixedly connected to the docking side of the moving mold 3; a sliding groove 10 provided on the lower side of the docking groove 7; and the sliding groove 10 communicating with the working cavity 24; and two sets of docking grooves 7 symmetrically distributed about the center point of the moving mold 3.

[0037] During mold assembly and mold closing, the moving mold 3, under the precise control of the hydraulic drive system, moves precisely along a predetermined trajectory with the help of the hydraulic rod 2, thus completing the assembly action with the fixed mold 4. When the moving mold 3 and the fixed mold 4 approach each other for assembly, the docking rod 6 on the moving mold 3 mates with the corresponding docking groove 7 on the fixed mold 4. Through the tight and precise cooperation between the docking groove 7 and the docking rod 6, a high-precision positioning device is installed for the docking of the moving mold 3 and the fixed mold 4. This effectively ensures the stability of the moving mold 3 and the fixed mold 4 during the docking process, and minimizes the possibility of misalignment between the fixed mold 4 and the moving mold 3 in the critical stage of mold closing. This prevents burrs and flash from appearing on the workpiece surface, or ensures that the dimensional accuracy of the workpiece does not meet the design requirements. Once the required phenomenon occurs and the workpiece processing steps are successfully completed, the pump device inside the water tank 5 can be activated. Driven by the pump, the water stored in the water tank 5 will circulate orderly along a predetermined path through the serpentine cooling pipe 8. The serpentine cooling pipe 8, with its unique curved shape, increases the contact area and contact time with the formed workpiece. During the water recirculation process, it will fully absorb the large amount of heat emitted by the formed workpiece. Through an efficient heat conduction mechanism, the heat on the workpiece will be quickly transferred to the water. As the heat is continuously dissipated, the temperature of the workpiece will be rapidly reduced, thereby effectively accelerating the cooling speed of the workpiece. This creates favorable conditions for the subsequent demolding process and ensures the stability and efficiency of the entire production process.

[0038] Example 2: To solve the problem of difficult demolding of the molded workpiece, a lifting mechanism is provided. This lifting mechanism can lift the molded workpiece, such as... Figure 3 , Figure 4 , Figure 6 - Figure 8The present invention provides the following technical solution: a die-casting equipment for processing mechanical metal parts, comprising: a water tank 5 fixedly connected to the outside of a fixed mold 4, and a working cavity 24 opened inside the fixed mold 4, and a serpentine cooling pipe 8 connected to the water tank 5 fixedly connected inside the working cavity 24; a docking groove 7 opened on the docking side of the fixed mold 4, and a lifting mechanism provided between the inside of the docking groove 7 and the working cavity 24; the lifting mechanism realizes the lifting operation of the processed parts by the removal of the moving mold 3 and the supply of water in the serpentine cooling pipe 8; the lifting mechanism includes a fixed plate 11, which is fixedly connected inside the docking groove 7, and a sliding rod 14 is slidably connected through the center of the fixed plate 11; an outer connecting plate 13 is fixedly connected to the outer end of the sliding rod 14, and an inner connecting plate 12 is fixedly connected to the inner end of the sliding rod 14; one outlet of the serpentine cooling pipe 8 is connected to the inner side of the docking groove 7, and... Under the squeezing action of the water output from the serpentine cooling pipe 8, the inner connecting plate 12 drives the slide rod 14 to slide outward along the fixed plate 11. When the moving mold 3 and the fixed mold 4 are assembled, the inner end of the docking rod 6 is in contact with the outer side of the outer connecting plate 13. The lower surface of the inner connecting plate 12 is fixedly connected to the adjusting frame 9, and the adjusting frame 9 is slidably connected inside the slide groove 10. The end side of the adjusting frame 9 extends into the working cavity 24. At the same time, the end side of the adjusting frame 9 is fixedly connected to the lifting plate 19, and two sets of lifting plates 19 are arranged up and down along the end side of the adjusting frame 9. The inner side of the lifting plate 19 is equally spaced with lifting rods 18, and the lifting rods 18 are slidably set on the fixed mold 4. When the moving mold 3 and the fixed mold 4 are in the mold-closed state, the end side of the lifting rod 18 is flush with the inner wall of the fixed mold 4. When the moving mold 3 and the fixed mold 4 are not closed, the lifting rod 18 and the fixed mold 4 form a sliding structure, and the end of the lifting rod 18 extends out of the inner wall of the fixed mold 4.

[0039] When the moving mold 3 and the fixed mold 4 are in the closed state, the mating rod 6 will come into close contact with the outer connecting plate 13, thereby effectively limiting the outer connecting plate 13. In this state, the serpentine cooling pipe 8 continuously supplies cooling water, but due to the limiting obstruction of the mating rod 6, the cooling water cannot generate enough force to push the outer connecting plate 13 outward. When the workpiece demolding operation is required, the moving mold 3 begins to drive the mating rod 6 outward. At the same time, the serpentine cooling pipe 8 still maintains a stable supply of cooling water. Under the action of the unique flow guiding structure of the serpentine cooling pipe 8, some of the cooling water will flow into the interior of the mating groove 7. At this time, the cooling water exerts a pushing and squeezing effect on the inner connecting plate 12 by its own pressure, making the inner connecting plate 12... The connecting plate 12 drives the slide rod 14 to slide outward along the track set by the fixed plate 11. During the outward sliding of the slide rod 14, it will simultaneously drive the outer connecting plate 13 to move outward. Since the lower end of the outer connecting plate 13 is fixedly connected to the docking rod 6, it will also simultaneously drive the adjusting frame 9 to move outward. Under the drive of the adjusting frame 9, the lifting plate 19 will also simultaneously drive the lifting rod 18 to move outward, so that the end of the lifting rod 18 extends out of the inner wall of the fixed mold 4, applying an upward lifting force to the workpiece, assisting in completing the demolding operation of the workpiece, and effectively improving the demolding efficiency.

[0040] Example 3: To further improve demolding efficiency, a demolding mechanism is provided. This mechanism can cooperate with the lifting rod 18 to improve workpiece demolding efficiency, such as... Figure 5 , Figure 9 - Figure 12 The present invention provides the following technical solution: a die-casting equipment for processing mechanical metal parts, comprising: a mold-moving rod 23 slidably connected to the inner side of the fixed mold 4, and a demolding mechanism provided between the inner side of the mold-moving rod 23 and the working cavity 24; the demolding mechanism synchronously drives the mold-moving rod 23 to disengage from the fixed mold 4 through the outward movement of the lifting mechanism; the demolding mechanism includes a second connecting box 17, the second connecting box 17 being fixedly connected to the inner side of the fixed mold 4, and a second push plate 22 slidably connected inside the second connecting box 17; the mold-moving rod 23 being fixedly connected at equal intervals to the inner side of the second push plate 22; and a second push plate 22 being fixedly connected to the inner side of the fixed mold 4. The first connecting box 16 has a first push plate 21 slidably connected inside it, and a linkage rod 20 is fixedly connected to the inner side of the first push plate 21. The linkage rod 20 is slidably connected through the side of the first connecting box 16, and the outer end of the linkage rod 20 is fixedly connected to the side of the lifting plate 19. A connecting hose 15 is provided between the bottom of the first connecting box 16 and the side of the second connecting box 17. When the lifting plate 19 moves outward, the mold moving rod 23 slides into the interior of the second connecting box 17. When the lifting rod 18 is not in the lifting state, the end of the mold moving rod 23 is flush with the inner wall of the fixed mold 4.

[0041] When the lifting plate 19 moves outward under external force, it establishes a stable connection with the first push plate 21 through the precisely designed linkage rod 20. This synchronously drives the first push plate 21 to move smoothly outward along the preset track inside the first connecting box 16. During the movement of the first push plate 21, according to fluid dynamics principles, it exerts a suction effect on the gas inside the first connecting box 16, creating a negative pressure environment. Since the first connecting box 16 and the second connecting box 17 are connected by a connecting hose 15, under the drive of the negative pressure, the gas inside the second connecting box 17 will flow along the... The connecting hose 15 is drawn into the first connecting box 16. At this time, the air pressure inside the second connecting box 17 decreases. Under the negative pressure formed by the air pressure difference on both sides, the second push plate 22 will synchronously drive the mold moving rod 23 to move inward. After the mold moving rod 23 moves inward, it will disengage from the fixed mold 4, effectively reducing the contact area between the inner wall of the fixed mold 4 and the workpiece. The disengagement of the mold moving rod 23 from the fixed mold 4 and the lifting action of the lifting rod 18 on the workpiece work together, which simultaneously reduces contact resistance and provides upward lifting force, further optimizing the mechanical conditions for workpiece demolding and significantly improving the work efficiency of workpiece demolding.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A die-casting equipment for processing mechanical metal parts, comprising a base (1), wherein a hydraulic rod (2) is fixedly connected to the side of the base (1), and a moving mold (3) is fixedly connected to the output end of the hydraulic rod (2), and a fixed mold (4) adapted to the moving mold (3) is fixedly connected above the equipment, and a port for injecting molten metal is provided above the fixed mold (4), characterized in that, A water tank (5) is fixedly connected to the outside of the fixed mold (4), and a working cavity (24) is opened inside the fixed mold (4). A serpentine cooling pipe (8) that is connected to the water tank (5) is fixedly connected inside the working cavity (24). A docking groove (7) is opened on the docking side of the fixed mold (4), and a lifting mechanism is provided between the inside of the docking groove (7) and the working cavity (24). The lifting mechanism realizes the lifting operation of the processed parts by the removal of the moving mold (3) and the supply of water in the serpentine cooling pipe (8). A mold moving rod (23) is also slidably connected to the inside of the fixed mold (4), and a demolding mechanism is provided between the inside of the mold moving rod (23) and the working cavity (24). The demolding mechanism drives the mold moving rod (23) to detach from the fixed mold (4) in sync with the outward movement of the lifting mechanism. The moving mold (3) is fixedly connected to a docking rod (6) that matches the position of the docking groove (7), and a sliding groove (10) is provided on the lower side of the docking groove (7), and the sliding groove (10) is connected to the working cavity (24). The docking groove (7) is symmetrically distributed in two sets about the center point of the moving mold (3). The lifting mechanism includes a fixed plate (11), which is fixedly connected to the inside of the docking groove (7), and a sliding rod (14) is slidably connected through the center of the fixed plate (11). An outer connecting plate (13) is fixedly connected to the outer end of the sliding rod (14), and an inner connecting plate (12) is fixedly connected to the inner end of the sliding rod (14). One of the serpentine cooling pipes (8) The output port is connected to the inside of the docking groove (7), and the inner connecting plate (12) drives the slide rod (14) to slide outward along the fixed plate (11) under the squeezing action of the water output by the serpentine cooling pipe (8). When the moving mold (3) and the fixed mold (4) are docked and assembled, the inner end of the docking rod (6) is in contact with the outer side of the outer connecting plate (13). The lower surface of the inner connecting plate (12) is fixedly connected to the adjusting frame (9), and the adjusting frame (9) is slidably connected inside the slide groove (10). The end side of the adjusting frame (9) extends into the inside of the working cavity (24). At the same time, the end side of the adjusting frame (9) is fixedly connected to the lifting plate (19), and the lifting plate (19) is arranged in two sets along the end side of the adjusting frame (9).

2. The die-casting equipment for processing mechanical metal parts according to claim 1, characterized in that: The inner side of the lifting plate (19) is provided with lifting rods (18) arranged at equal intervals, and the lifting rods (18) are slidably arranged on the fixed mold (4). When the moving mold (3) and the fixed mold (4) are in the mold closing state, the end of the lifting rod (18) is flush with the inner wall of the fixed mold (4). When the moving mold (3) and the fixed mold (4) are not closed, the lifting rod (18) and the fixed mold (4) form a sliding structure, and the end of the lifting rod (18) extends out of the inner wall of the fixed mold (4).

3. The die-casting equipment for machining mechanical metal parts according to claim 2, characterized in that: The demolding mechanism includes a second connecting box (17), which is fixedly connected to the inside of the fixed mold (4), and a second push plate (22) is slidably connected inside the second connecting box (17). The mold moving rods (23) are fixedly connected at equal intervals to the inside of the second push plate (22).

4. The die-casting equipment for machining mechanical metal parts according to claim 3, characterized in that: The inner side of the fixed mold (4) is also fixedly connected to a first connecting box (16), and the first push plate (21) is slidably connected inside the first connecting box (16). The inner side of the first push plate (21) is fixedly connected to a linkage rod (20), and the linkage rod (20) is slidably connected through the side of the first connecting box (16). At the same time, the outer end of the linkage rod (20) is fixedly connected to the side of the lifting plate (19).

5. The die-casting equipment for machining mechanical metal parts according to claim 4, characterized in that: A connecting hose (15) is provided between the bottom of the first connecting box (16) and the side of the second connecting box (17). When the lifting plate (19) moves outward, the mold moving rod (23) slides into the interior of the second connecting box (17). When the lifting rod (18) is not in the lifting state, the end of the mold moving rod (23) is flush with the inner wall of the fixed mold (4).

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